求函数Y=2X三次方减3X平方的极值
人气：464 ℃ 时间：2019-08-19 14:26:47
解答
y=2x^3-3x^2
y'=6x^2-6x=6x(x-1)
x＜0,或x＞1时单调增,0＜x＜1时单调减
极大值f(0) = 0-0=0
极小值f(1) = 2-3=-1
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